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Finding the Fourth Proportional to 924.15, 1,275.17 and 530.90

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Solution

The fourth proportional to 924.15, 1,275.17 and 530.90 is: 732.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    924.15 : 1,275.17 = 530.90 : x
  2. Step 2: Convert to fraction form
    924.15/1,275.17 = 530.90/x
  3. Step 3: Cross multiply
    924.15x = 1,275.17 × 530.90
  4. Step 4: Simplify right side
    924.15x = 676,978.72
  5. Step 5: Solve for x
    x = 676,978.72/924.15
  6. Step 6: Final answer
    x = 732.54

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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.