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Finding the Fourth Proportional to 880.02, 1,318.62 and 417.69

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Solution

The fourth proportional to 880.02, 1,318.62 and 417.69 is: 625.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    880.02 : 1,318.62 = 417.69 : x
  2. Step 2: Convert to fraction form
    880.02/1,318.62 = 417.69/x
  3. Step 3: Cross multiply
    880.02x = 1,318.62 × 417.69
  4. Step 4: Simplify right side
    880.02x = 550,774.39
  5. Step 5: Solve for x
    x = 550,774.39/880.02
  6. Step 6: Final answer
    x = 625.87

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1.5x scale

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.