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Finding the Fourth Proportional to 1,303.79, 1,801.70 and 932.60

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Solution

The fourth proportional to 1,303.79, 1,801.70 and 932.60 is: 1,288.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,303.79 : 1,801.70 = 932.60 : x
  2. Step 2: Convert to fraction form
    1,303.79/1,801.70 = 932.60/x
  3. Step 3: Cross multiply
    1,303.79x = 1,801.70 × 932.60
  4. Step 4: Simplify right side
    1,303.79x = 1,680,251.75
  5. Step 5: Solve for x
    x = 1,680,251.75/1,303.79
  6. Step 6: Final answer
    x = 1,288.75

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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.