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Finding the Fourth Proportional to 1,247.71, 1,871.58 and 598.29

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Solution

The fourth proportional to 1,247.71, 1,871.58 and 598.29 is: 897.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247.71 : 1,871.58 = 598.29 : x
  2. Step 2: Convert to fraction form
    1,247.71/1,871.58 = 598.29/x
  3. Step 3: Cross multiply
    1,247.71x = 1,871.58 × 598.29
  4. Step 4: Simplify right side
    1,247.71x = 1,119,741.85
  5. Step 5: Solve for x
    x = 1,119,741.85/1,247.71
  6. Step 6: Final answer
    x = 897.44

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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.