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Finding the Fourth Proportional to 756.03, 1,044.51 and 715.02

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Solution

The fourth proportional to 756.03, 1,044.51 and 715.02 is: 987.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    756.03 : 1,044.51 = 715.02 : x
  2. Step 2: Convert to fraction form
    756.03/1,044.51 = 715.02/x
  3. Step 3: Cross multiply
    756.03x = 1,044.51 × 715.02
  4. Step 4: Simplify right side
    756.03x = 746,845.54
  5. Step 5: Solve for x
    x = 746,845.54/756.03
  6. Step 6: Final answer
    x = 987.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.