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Finding the Fourth Proportional to 1,253.30, 1,728.24 and 880.16

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Solution

The fourth proportional to 1,253.30, 1,728.24 and 880.16 is: 1,213.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,253.30 : 1,728.24 = 880.16 : x
  2. Step 2: Convert to fraction form
    1,253.30/1,728.24 = 880.16/x
  3. Step 3: Cross multiply
    1,253.30x = 1,728.24 × 880.16
  4. Step 4: Simplify right side
    1,253.30x = 1,521,127.72
  5. Step 5: Solve for x
    x = 1,521,127.72/1,253.30
  6. Step 6: Final answer
    x = 1,213.70

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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.