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Finding the Fourth Proportional to 527.45, 790.16 and 253.19

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Solution

The fourth proportional to 527.45, 790.16 and 253.19 is: 379.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.45 : 790.16 = 253.19 : x
  2. Step 2: Convert to fraction form
    527.45/790.16 = 253.19/x
  3. Step 3: Cross multiply
    527.45x = 790.16 × 253.19
  4. Step 4: Simplify right side
    527.45x = 200,061.32
  5. Step 5: Solve for x
    x = 200,061.32/527.45
  6. Step 6: Final answer
    x = 379.30

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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.