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Finding the Fourth Proportional to 924.25, 1,385.85 and 307.62

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Solution

The fourth proportional to 924.25, 1,385.85 and 307.62 is: 461.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    924.25 : 1,385.85 = 307.62 : x
  2. Step 2: Convert to fraction form
    924.25/1,385.85 = 307.62/x
  3. Step 3: Cross multiply
    924.25x = 1,385.85 × 307.62
  4. Step 4: Simplify right side
    924.25x = 426,315.18
  5. Step 5: Solve for x
    x = 426,315.18/924.25
  6. Step 6: Final answer
    x = 461.26

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1.5x scale

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.