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Finding the Fourth Proportional to 651.59, 977.57 and 305.11

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Solution

The fourth proportional to 651.59, 977.57 and 305.11 is: 457.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.59 : 977.57 = 305.11 : x
  2. Step 2: Convert to fraction form
    651.59/977.57 = 305.11/x
  3. Step 3: Cross multiply
    651.59x = 977.57 × 305.11
  4. Step 4: Simplify right side
    651.59x = 298,266.38
  5. Step 5: Solve for x
    x = 298,266.38/651.59
  6. Step 6: Final answer
    x = 457.75

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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.