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Finding the Fourth Proportional to 505.44, 753.30 and 479.52

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Solution

The fourth proportional to 505.44, 753.30 and 479.52 is: 714.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    505.44 : 753.30 = 479.52 : x
  2. Step 2: Convert to fraction form
    505.44/753.30 = 479.52/x
  3. Step 3: Cross multiply
    505.44x = 753.30 × 479.52
  4. Step 4: Simplify right side
    505.44x = 361,222.42
  5. Step 5: Solve for x
    x = 361,222.42/505.44
  6. Step 6: Final answer
    x = 714.67

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.