Home / 1,087.07-1,499.78-614.90

Finding the Fourth Proportional to 1,087.07, 1,499.78 and 614.90

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Solution

The fourth proportional to 1,087.07, 1,499.78 and 614.90 is: 848.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087.07 : 1,499.78 = 614.90 : x
  2. Step 2: Convert to fraction form
    1,087.07/1,499.78 = 614.90/x
  3. Step 3: Cross multiply
    1,087.07x = 1,499.78 × 614.90
  4. Step 4: Simplify right side
    1,087.07x = 922,204.15
  5. Step 5: Solve for x
    x = 922,204.15/1,087.07
  6. Step 6: Final answer
    x = 848.34

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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.