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Finding the Fourth Proportional to 617.98, 856.51 and 606.46

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Solution

The fourth proportional to 617.98, 856.51 and 606.46 is: 840.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.98 : 856.51 = 606.46 : x
  2. Step 2: Convert to fraction form
    617.98/856.51 = 606.46/x
  3. Step 3: Cross multiply
    617.98x = 856.51 × 606.46
  4. Step 4: Simplify right side
    617.98x = 519,436.02
  5. Step 5: Solve for x
    x = 519,436.02/617.98
  6. Step 6: Final answer
    x = 840.54

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.