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Finding the Fourth Proportional to 924.61, 1,387.14 and 376.87

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Solution

The fourth proportional to 924.61, 1,387.14 and 376.87 is: 565.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    924.61 : 1,387.14 = 376.87 : x
  2. Step 2: Convert to fraction form
    924.61/1,387.14 = 376.87/x
  3. Step 3: Cross multiply
    924.61x = 1,387.14 × 376.87
  4. Step 4: Simplify right side
    924.61x = 522,771.45
  5. Step 5: Solve for x
    x = 522,771.45/924.61
  6. Step 6: Final answer
    x = 565.40

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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.