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Finding the Fourth Proportional to 880.70, 1,319.94 and 417.46

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Solution

The fourth proportional to 880.70, 1,319.94 and 417.46 is: 625.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    880.70 : 1,319.94 = 417.46 : x
  2. Step 2: Convert to fraction form
    880.70/1,319.94 = 417.46/x
  3. Step 3: Cross multiply
    880.70x = 1,319.94 × 417.46
  4. Step 4: Simplify right side
    880.70x = 551,022.15
  5. Step 5: Solve for x
    x = 551,022.15/880.70
  6. Step 6: Final answer
    x = 625.66

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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.