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Finding the Fourth Proportional to 1,685.60, 2,526.41 and 760.07

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Solution

The fourth proportional to 1,685.60, 2,526.41 and 760.07 is: 1,139.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,685.60 : 2,526.41 = 760.07 : x
  2. Step 2: Convert to fraction form
    1,685.60/2,526.41 = 760.07/x
  3. Step 3: Cross multiply
    1,685.60x = 2,526.41 × 760.07
  4. Step 4: Simplify right side
    1,685.60x = 1,920,262.83
  5. Step 5: Solve for x
    x = 1,920,262.83/1,685.60
  6. Step 6: Final answer
    x = 1,139.22

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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.