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Finding the Fourth Proportional to 610.39, 848.31 and 603.91

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Solution

The fourth proportional to 610.39, 848.31 and 603.91 is: 839.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.39 : 848.31 = 603.91 : x
  2. Step 2: Convert to fraction form
    610.39/848.31 = 603.91/x
  3. Step 3: Cross multiply
    610.39x = 848.31 × 603.91
  4. Step 4: Simplify right side
    610.39x = 512,302.89
  5. Step 5: Solve for x
    x = 512,302.89/610.39
  6. Step 6: Final answer
    x = 839.30

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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.