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Finding the Fourth Proportional to 783.34, 1,172.71 and 732.04

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Solution

The fourth proportional to 783.34, 1,172.71 and 732.04 is: 1,095.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    783.34 : 1,172.71 = 732.04 : x
  2. Step 2: Convert to fraction form
    783.34/1,172.71 = 732.04/x
  3. Step 3: Cross multiply
    783.34x = 1,172.71 × 732.04
  4. Step 4: Simplify right side
    783.34x = 858,470.63
  5. Step 5: Solve for x
    x = 858,470.63/783.34
  6. Step 6: Final answer
    x = 1,095.91

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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.