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Finding the Fourth Proportional to 1,474.81, 2,035.02 and 915.30

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Solution

The fourth proportional to 1,474.81, 2,035.02 and 915.30 is: 1,262.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,474.81 : 2,035.02 = 915.30 : x
  2. Step 2: Convert to fraction form
    1,474.81/2,035.02 = 915.30/x
  3. Step 3: Cross multiply
    1,474.81x = 2,035.02 × 915.30
  4. Step 4: Simplify right side
    1,474.81x = 1,862,657.24
  5. Step 5: Solve for x
    x = 1,862,657.24/1,474.81
  6. Step 6: Final answer
    x = 1,262.98

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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.