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Finding the Fourth Proportional to 761.67, 1,051.32 and 447.01

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Solution

The fourth proportional to 761.67, 1,051.32 and 447.01 is: 617.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    761.67 : 1,051.32 = 447.01 : x
  2. Step 2: Convert to fraction form
    761.67/1,051.32 = 447.01/x
  3. Step 3: Cross multiply
    761.67x = 1,051.32 × 447.01
  4. Step 4: Simplify right side
    761.67x = 469,950.55
  5. Step 5: Solve for x
    x = 469,950.55/761.67
  6. Step 6: Final answer
    x = 617.00

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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.