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Finding the Fourth Proportional to 736.04, 1,013.52 and 666.60

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Solution

The fourth proportional to 736.04, 1,013.52 and 666.60 is: 917.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    736.04 : 1,013.52 = 666.60 : x
  2. Step 2: Convert to fraction form
    736.04/1,013.52 = 666.60/x
  3. Step 3: Cross multiply
    736.04x = 1,013.52 × 666.60
  4. Step 4: Simplify right side
    736.04x = 675,612.43
  5. Step 5: Solve for x
    x = 675,612.43/736.04
  6. Step 6: Final answer
    x = 917.90

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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.