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Finding the Fourth Proportional to 558.51, 837.77 and 315.03

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Solution

The fourth proportional to 558.51, 837.77 and 315.03 is: 472.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.51 : 837.77 = 315.03 : x
  2. Step 2: Convert to fraction form
    558.51/837.77 = 315.03/x
  3. Step 3: Cross multiply
    558.51x = 837.77 × 315.03
  4. Step 4: Simplify right side
    558.51x = 263,922.68
  5. Step 5: Solve for x
    x = 263,922.68/558.51
  6. Step 6: Final answer
    x = 472.55

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Double scale
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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.