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Finding the Fourth Proportional to 610.62, 921.35 and 583.98

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Solution

The fourth proportional to 610.62, 921.35 and 583.98 is: 881.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.62 : 921.35 = 583.98 : x
  2. Step 2: Convert to fraction form
    610.62/921.35 = 583.98/x
  3. Step 3: Cross multiply
    610.62x = 921.35 × 583.98
  4. Step 4: Simplify right side
    610.62x = 538,047.05
  5. Step 5: Solve for x
    x = 538,047.05/610.62
  6. Step 6: Final answer
    x = 881.15

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.