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Finding the Fourth Proportional to 464.86, 696.80 and 291.12

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Solution

The fourth proportional to 464.86, 696.80 and 291.12 is: 436.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    464.86 : 696.80 = 291.12 : x
  2. Step 2: Convert to fraction form
    464.86/696.80 = 291.12/x
  3. Step 3: Cross multiply
    464.86x = 696.80 × 291.12
  4. Step 4: Simplify right side
    464.86x = 202,852.42
  5. Step 5: Solve for x
    x = 202,852.42/464.86
  6. Step 6: Final answer
    x = 436.37

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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.