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Finding the Fourth Proportional to 1,059.14, 1,588.70 and 409.42

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Solution

The fourth proportional to 1,059.14, 1,588.70 and 409.42 is: 614.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,059.14 : 1,588.70 = 409.42 : x
  2. Step 2: Convert to fraction form
    1,059.14/1,588.70 = 409.42/x
  3. Step 3: Cross multiply
    1,059.14x = 1,588.70 × 409.42
  4. Step 4: Simplify right side
    1,059.14x = 650,445.55
  5. Step 5: Solve for x
    x = 650,445.55/1,059.14
  6. Step 6: Final answer
    x = 614.13

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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.