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Finding the Fourth Proportional to 1,470.41, 2,205.66 and 580.91

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Solution

The fourth proportional to 1,470.41, 2,205.66 and 580.91 is: 871.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,470.41 : 2,205.66 = 580.91 : x
  2. Step 2: Convert to fraction form
    1,470.41/2,205.66 = 580.91/x
  3. Step 3: Cross multiply
    1,470.41x = 2,205.66 × 580.91
  4. Step 4: Simplify right side
    1,470.41x = 1,281,289.95
  5. Step 5: Solve for x
    x = 1,281,289.95/1,470.41
  6. Step 6: Final answer
    x = 871.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.