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Finding the Fourth Proportional to 1,470.62, 2,029.45 and 807.47

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Solution

The fourth proportional to 1,470.62, 2,029.45 and 807.47 is: 1,114.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,470.62 : 2,029.45 = 807.47 : x
  2. Step 2: Convert to fraction form
    1,470.62/2,029.45 = 807.47/x
  3. Step 3: Cross multiply
    1,470.62x = 2,029.45 × 807.47
  4. Step 4: Simplify right side
    1,470.62x = 1,638,723.05
  5. Step 5: Solve for x
    x = 1,638,723.05/1,470.62
  6. Step 6: Final answer
    x = 1,114.31

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1.5x scale

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.