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Finding the Fourth Proportional to 924.72, 1,281.63 and 907.44

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Solution

The fourth proportional to 924.72, 1,281.63 and 907.44 is: 1,257.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    924.72 : 1,281.63 = 907.44 : x
  2. Step 2: Convert to fraction form
    924.72/1,281.63 = 907.44/x
  3. Step 3: Cross multiply
    924.72x = 1,281.63 × 907.44
  4. Step 4: Simplify right side
    924.72x = 1,163,002.33
  5. Step 5: Solve for x
    x = 1,163,002.33/924.72
  6. Step 6: Final answer
    x = 1,257.68

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.