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Finding the Fourth Proportional to 530.78, 732.52 and 294.75

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Solution

The fourth proportional to 530.78, 732.52 and 294.75 is: 406.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.78 : 732.52 = 294.75 : x
  2. Step 2: Convert to fraction form
    530.78/732.52 = 294.75/x
  3. Step 3: Cross multiply
    530.78x = 732.52 × 294.75
  4. Step 4: Simplify right side
    530.78x = 215,909.53
  5. Step 5: Solve for x
    x = 215,909.53/530.78
  6. Step 6: Final answer
    x = 406.78

Related Problems

Find fourth proportional to 265.39, 366.26 and 147.38
Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.