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Finding the Fourth Proportional to 651.42, 975.87 and 578.52

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Solution

The fourth proportional to 651.42, 975.87 and 578.52 is: 866.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.42 : 975.87 = 578.52 : x
  2. Step 2: Convert to fraction form
    651.42/975.87 = 578.52/x
  3. Step 3: Cross multiply
    651.42x = 975.87 × 578.52
  4. Step 4: Simplify right side
    651.42x = 564,560.31
  5. Step 5: Solve for x
    x = 564,560.31/651.42
  6. Step 6: Final answer
    x = 866.66

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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.