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Finding the Fourth Proportional to 710.41, 1,065.55 and 223.20

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Solution

The fourth proportional to 710.41, 1,065.55 and 223.20 is: 334.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    710.41 : 1,065.55 = 223.20 : x
  2. Step 2: Convert to fraction form
    710.41/1,065.55 = 223.20/x
  3. Step 3: Cross multiply
    710.41x = 1,065.55 × 223.20
  4. Step 4: Simplify right side
    710.41x = 237,830.76
  5. Step 5: Solve for x
    x = 237,830.76/710.41
  6. Step 6: Final answer
    x = 334.78

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Half scale
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Double scale
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Similar ratio
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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.