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Finding the Fourth Proportional to 1,258.72, 1,737.28 and 735.04

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Solution

The fourth proportional to 1,258.72, 1,737.28 and 735.04 is: 1,014.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258.72 : 1,737.28 = 735.04 : x
  2. Step 2: Convert to fraction form
    1,258.72/1,737.28 = 735.04/x
  3. Step 3: Cross multiply
    1,258.72x = 1,737.28 × 735.04
  4. Step 4: Simplify right side
    1,258.72x = 1,276,970.29
  5. Step 5: Solve for x
    x = 1,276,970.29/1,258.72
  6. Step 6: Final answer
    x = 1,014.50

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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.