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Finding the Fourth Proportional to 1,479.35, 2,041.62 and 956.90

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Solution

The fourth proportional to 1,479.35, 2,041.62 and 956.90 is: 1,320.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,479.35 : 2,041.62 = 956.90 : x
  2. Step 2: Convert to fraction form
    1,479.35/2,041.62 = 956.90/x
  3. Step 3: Cross multiply
    1,479.35x = 2,041.62 × 956.90
  4. Step 4: Simplify right side
    1,479.35x = 1,953,627.69
  5. Step 5: Solve for x
    x = 1,953,627.69/1,479.35
  6. Step 6: Final answer
    x = 1,320.60

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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.