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Finding the Fourth Proportional to 880.10, 1,319.70 and 294.89

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Solution

The fourth proportional to 880.10, 1,319.70 and 294.89 is: 442.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    880.10 : 1,319.70 = 294.89 : x
  2. Step 2: Convert to fraction form
    880.10/1,319.70 = 294.89/x
  3. Step 3: Cross multiply
    880.10x = 1,319.70 × 294.89
  4. Step 4: Simplify right side
    880.10x = 389,164.86
  5. Step 5: Solve for x
    x = 389,164.86/880.10
  6. Step 6: Final answer
    x = 442.19

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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.