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Finding the Fourth Proportional to 572.97, 855.30 and 503.78

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Solution

The fourth proportional to 572.97, 855.30 and 503.78 is: 752.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.97 : 855.30 = 503.78 : x
  2. Step 2: Convert to fraction form
    572.97/855.30 = 503.78/x
  3. Step 3: Cross multiply
    572.97x = 855.30 × 503.78
  4. Step 4: Simplify right side
    572.97x = 430,878.76
  5. Step 5: Solve for x
    x = 430,878.76/572.97
  6. Step 6: Final answer
    x = 752.01

Related Problems

Find fourth proportional to 286.49, 427.65 and 251.89
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 (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.