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Finding the Fourth Proportional to 530.52, 731.88 and 355.80

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Solution

The fourth proportional to 530.52, 731.88 and 355.80 is: 490.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.52 : 731.88 = 355.80 : x
  2. Step 2: Convert to fraction form
    530.52/731.88 = 355.80/x
  3. Step 3: Cross multiply
    530.52x = 731.88 × 355.80
  4. Step 4: Simplify right side
    530.52x = 260,402.90
  5. Step 5: Solve for x
    x = 260,402.90/530.52
  6. Step 6: Final answer
    x = 490.84

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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.