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Finding the Fourth Proportional to 880.03, 1,213.45 and 565.35

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Solution

The fourth proportional to 880.03, 1,213.45 and 565.35 is: 779.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    880.03 : 1,213.45 = 565.35 : x
  2. Step 2: Convert to fraction form
    880.03/1,213.45 = 565.35/x
  3. Step 3: Cross multiply
    880.03x = 1,213.45 × 565.35
  4. Step 4: Simplify right side
    880.03x = 686,017.99
  5. Step 5: Solve for x
    x = 686,017.99/880.03
  6. Step 6: Final answer
    x = 779.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.