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Finding the Fourth Proportional to 1,358.76, 1,875.08 and 966.46

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Solution

The fourth proportional to 1,358.76, 1,875.08 and 966.46 is: 1,333.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,358.76 : 1,875.08 = 966.46 : x
  2. Step 2: Convert to fraction form
    1,358.76/1,875.08 = 966.46/x
  3. Step 3: Cross multiply
    1,358.76x = 1,875.08 × 966.46
  4. Step 4: Simplify right side
    1,358.76x = 1,812,189.82
  5. Step 5: Solve for x
    x = 1,812,189.82/1,358.76
  6. Step 6: Final answer
    x = 1,333.71

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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.