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Finding the Fourth Proportional to 1,360.32, 1,877.28 and 956.60

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Solution

The fourth proportional to 1,360.32, 1,877.28 and 956.60 is: 1,320.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,360.32 : 1,877.28 = 956.60 : x
  2. Step 2: Convert to fraction form
    1,360.32/1,877.28 = 956.60/x
  3. Step 3: Cross multiply
    1,360.32x = 1,877.28 × 956.60
  4. Step 4: Simplify right side
    1,360.32x = 1,795,806.05
  5. Step 5: Solve for x
    x = 1,795,806.05/1,360.32
  6. Step 6: Final answer
    x = 1,320.14

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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.