Home / 760.24-1,139.81-614.17

Finding the Fourth Proportional to 760.24, 1,139.81 and 614.17

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Solution

The fourth proportional to 760.24, 1,139.81 and 614.17 is: 920.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    760.24 : 1,139.81 = 614.17 : x
  2. Step 2: Convert to fraction form
    760.24/1,139.81 = 614.17/x
  3. Step 3: Cross multiply
    760.24x = 1,139.81 × 614.17
  4. Step 4: Simplify right side
    760.24x = 700,037.11
  5. Step 5: Solve for x
    x = 700,037.11/760.24
  6. Step 6: Final answer
    x = 920.81

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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.