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Finding the Fourth Proportional to 924.02, 1,385.90 and 549

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Solution

The fourth proportional to 924.02, 1,385.90 and 549 is: 823.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    924.02 : 1,385.90 = 549 : x
  2. Step 2: Convert to fraction form
    924.02/1,385.90 = 549/x
  3. Step 3: Cross multiply
    924.02x = 1,385.90 × 549
  4. Step 4: Simplify right side
    924.02x = 760,859.10
  5. Step 5: Solve for x
    x = 760,859.10/924.02
  6. Step 6: Final answer
    x = 823.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.