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Finding the Fourth Proportional to 651.59, 899.19 and 356.85

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Solution

The fourth proportional to 651.59, 899.19 and 356.85 is: 492.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.59 : 899.19 = 356.85 : x
  2. Step 2: Convert to fraction form
    651.59/899.19 = 356.85/x
  3. Step 3: Cross multiply
    651.59x = 899.19 × 356.85
  4. Step 4: Simplify right side
    651.59x = 320,875.95
  5. Step 5: Solve for x
    x = 320,875.95/651.59
  6. Step 6: Final answer
    x = 492.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.