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Finding the Fourth Proportional to 1,470.77, 2,029.64 and 807.56

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Solution

The fourth proportional to 1,470.77, 2,029.64 and 807.56 is: 1,114.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,470.77 : 2,029.64 = 807.56 : x
  2. Step 2: Convert to fraction form
    1,470.77/2,029.64 = 807.56/x
  3. Step 3: Cross multiply
    1,470.77x = 2,029.64 × 807.56
  4. Step 4: Simplify right side
    1,470.77x = 1,639,041.89
  5. Step 5: Solve for x
    x = 1,639,041.89/1,470.77
  6. Step 6: Final answer
    x = 1,114.41

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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.