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Finding the Fourth Proportional to 1,253.16, 1,871.10 and 1,070.46

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Solution

The fourth proportional to 1,253.16, 1,871.10 and 1,070.46 is: 1,598.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,253.16 : 1,871.10 = 1,070.46 : x
  2. Step 2: Convert to fraction form
    1,253.16/1,871.10 = 1,070.46/x
  3. Step 3: Cross multiply
    1,253.16x = 1,871.10 × 1,070.46
  4. Step 4: Simplify right side
    1,253.16x = 2,002,937.71
  5. Step 5: Solve for x
    x = 2,002,937.71/1,253.16
  6. Step 6: Final answer
    x = 1,598.31

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.