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Finding the Fourth Proportional to 767.36, 1,152.12 and 587

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Solution

The fourth proportional to 767.36, 1,152.12 and 587 is: 881.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    767.36 : 1,152.12 = 587 : x
  2. Step 2: Convert to fraction form
    767.36/1,152.12 = 587/x
  3. Step 3: Cross multiply
    767.36x = 1,152.12 × 587
  4. Step 4: Simplify right side
    767.36x = 676,294.44
  5. Step 5: Solve for x
    x = 676,294.44/767.36
  6. Step 6: Final answer
    x = 881.33

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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.