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Finding the Fourth Proportional to 1,350.12, 1,864.08 and 908.76

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Solution

The fourth proportional to 1,350.12, 1,864.08 and 908.76 is: 1,254.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,350.12 : 1,864.08 = 908.76 : x
  2. Step 2: Convert to fraction form
    1,350.12/1,864.08 = 908.76/x
  3. Step 3: Cross multiply
    1,350.12x = 1,864.08 × 908.76
  4. Step 4: Simplify right side
    1,350.12x = 1,694,001.34
  5. Step 5: Solve for x
    x = 1,694,001.34/1,350.12
  6. Step 6: Final answer
    x = 1,254.70

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1.5x scale

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.