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Finding the Fourth Proportional to 1,470.49, 2,026.86 and 909.71

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Solution

The fourth proportional to 1,470.49, 2,026.86 and 909.71 is: 1,253.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,470.49 : 2,026.86 = 909.71 : x
  2. Step 2: Convert to fraction form
    1,470.49/2,026.86 = 909.71/x
  3. Step 3: Cross multiply
    1,470.49x = 2,026.86 × 909.71
  4. Step 4: Simplify right side
    1,470.49x = 1,843,848.87
  5. Step 5: Solve for x
    x = 1,843,848.87/1,470.49
  6. Step 6: Final answer
    x = 1,253.90

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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.