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Finding the Fourth Proportional to 924.02, 1,385.88 and 307.58

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Solution

The fourth proportional to 924.02, 1,385.88 and 307.58 is: 461.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    924.02 : 1,385.88 = 307.58 : x
  2. Step 2: Convert to fraction form
    924.02/1,385.88 = 307.58/x
  3. Step 3: Cross multiply
    924.02x = 1,385.88 × 307.58
  4. Step 4: Simplify right side
    924.02x = 426,268.97
  5. Step 5: Solve for x
    x = 426,268.97/924.02
  6. Step 6: Final answer
    x = 461.32

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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.