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Finding the Fourth Proportional to 530.75, 732.44 and 331.70

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Solution

The fourth proportional to 530.75, 732.44 and 331.70 is: 457.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.75 : 732.44 = 331.70 : x
  2. Step 2: Convert to fraction form
    530.75/732.44 = 331.70/x
  3. Step 3: Cross multiply
    530.75x = 732.44 × 331.70
  4. Step 4: Simplify right side
    530.75x = 242,947.52
  5. Step 5: Solve for x
    x = 242,947.52/530.75
  6. Step 6: Final answer
    x = 457.74

Related Problems

Find fourth proportional to 265.38, 366.22 and 165.85
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.