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Finding the Fourth Proportional to 617.79, 918.73 and 598.32

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Solution

The fourth proportional to 617.79, 918.73 and 598.32 is: 889.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.79 : 918.73 = 598.32 : x
  2. Step 2: Convert to fraction form
    617.79/918.73 = 598.32/x
  3. Step 3: Cross multiply
    617.79x = 918.73 × 598.32
  4. Step 4: Simplify right side
    617.79x = 549,694.53
  5. Step 5: Solve for x
    x = 549,694.53/617.79
  6. Step 6: Final answer
    x = 889.78

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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.