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Finding the Fourth Proportional to 888.08, 1,226.76 and 713.20

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Solution

The fourth proportional to 888.08, 1,226.76 and 713.20 is: 985.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.08 : 1,226.76 = 713.20 : x
  2. Step 2: Convert to fraction form
    888.08/1,226.76 = 713.20/x
  3. Step 3: Cross multiply
    888.08x = 1,226.76 × 713.20
  4. Step 4: Simplify right side
    888.08x = 874,925.23
  5. Step 5: Solve for x
    x = 874,925.23/888.08
  6. Step 6: Final answer
    x = 985.19

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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.