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Finding the Fourth Proportional to 521.03, 777.46 and 508.67

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Solution

The fourth proportional to 521.03, 777.46 and 508.67 is: 759.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    521.03 : 777.46 = 508.67 : x
  2. Step 2: Convert to fraction form
    521.03/777.46 = 508.67/x
  3. Step 3: Cross multiply
    521.03x = 777.46 × 508.67
  4. Step 4: Simplify right side
    521.03x = 395,473.16
  5. Step 5: Solve for x
    x = 395,473.16/521.03
  6. Step 6: Final answer
    x = 759.03

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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.