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Finding the Fourth Proportional to 741.56, 1,110.51 and 417.15

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Solution

The fourth proportional to 741.56, 1,110.51 and 417.15 is: 624.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    741.56 : 1,110.51 = 417.15 : x
  2. Step 2: Convert to fraction form
    741.56/1,110.51 = 417.15/x
  3. Step 3: Cross multiply
    741.56x = 1,110.51 × 417.15
  4. Step 4: Simplify right side
    741.56x = 463,249.25
  5. Step 5: Solve for x
    x = 463,249.25/741.56
  6. Step 6: Final answer
    x = 624.70

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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.