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Finding the Fourth Proportional to 880.70, 1,215.57 and 585.98

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Solution

The fourth proportional to 880.70, 1,215.57 and 585.98 is: 808.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    880.70 : 1,215.57 = 585.98 : x
  2. Step 2: Convert to fraction form
    880.70/1,215.57 = 585.98/x
  3. Step 3: Cross multiply
    880.70x = 1,215.57 × 585.98
  4. Step 4: Simplify right side
    880.70x = 712,299.71
  5. Step 5: Solve for x
    x = 712,299.71/880.70
  6. Step 6: Final answer
    x = 808.79

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1.5x scale

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.