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Finding the Fourth Proportional to 610.63, 841.74 and 479.41

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Solution

The fourth proportional to 610.63, 841.74 and 479.41 is: 660.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.63 : 841.74 = 479.41 : x
  2. Step 2: Convert to fraction form
    610.63/841.74 = 479.41/x
  3. Step 3: Cross multiply
    610.63x = 841.74 × 479.41
  4. Step 4: Simplify right side
    610.63x = 403,534.67
  5. Step 5: Solve for x
    x = 403,534.67/610.63
  6. Step 6: Final answer
    x = 660.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.