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Finding the Fourth Proportional to 616.06, 918.14 and 580.51

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Solution

The fourth proportional to 616.06, 918.14 and 580.51 is: 865.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.06 : 918.14 = 580.51 : x
  2. Step 2: Convert to fraction form
    616.06/918.14 = 580.51/x
  3. Step 3: Cross multiply
    616.06x = 918.14 × 580.51
  4. Step 4: Simplify right side
    616.06x = 532,989.45
  5. Step 5: Solve for x
    x = 532,989.45/616.06
  6. Step 6: Final answer
    x = 865.16

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.