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Finding the Fourth Proportional to 888.32, 1,225.60 and 622.76

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Solution

The fourth proportional to 888.32, 1,225.60 and 622.76 is: 859.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.32 : 1,225.60 = 622.76 : x
  2. Step 2: Convert to fraction form
    888.32/1,225.60 = 622.76/x
  3. Step 3: Cross multiply
    888.32x = 1,225.60 × 622.76
  4. Step 4: Simplify right side
    888.32x = 763,254.66
  5. Step 5: Solve for x
    x = 763,254.66/888.32
  6. Step 6: Final answer
    x = 859.21

Related Problems

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Half scale
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Double scale
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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.