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Finding the Fourth Proportional to 651.53, 899.11 and 356.79

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Solution

The fourth proportional to 651.53, 899.11 and 356.79 is: 492.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.53 : 899.11 = 356.79 : x
  2. Step 2: Convert to fraction form
    651.53/899.11 = 356.79/x
  3. Step 3: Cross multiply
    651.53x = 899.11 × 356.79
  4. Step 4: Simplify right side
    651.53x = 320,795.49
  5. Step 5: Solve for x
    x = 320,795.49/651.53
  6. Step 6: Final answer
    x = 492.38

Related Problems

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Half scale
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Double scale
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Similar ratio
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1.5x scale

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.