Home / 740.16-1,110.69-432.61

Finding the Fourth Proportional to 740.16, 1,110.69 and 432.61

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Solution

The fourth proportional to 740.16, 1,110.69 and 432.61 is: 649.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    740.16 : 1,110.69 = 432.61 : x
  2. Step 2: Convert to fraction form
    740.16/1,110.69 = 432.61/x
  3. Step 3: Cross multiply
    740.16x = 1,110.69 × 432.61
  4. Step 4: Simplify right side
    740.16x = 480,492.82
  5. Step 5: Solve for x
    x = 480,492.82/740.16
  6. Step 6: Final answer
    x = 649.17

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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.