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Finding the Fourth Proportional to 472.13, 651.54 and 275.77

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Solution

The fourth proportional to 472.13, 651.54 and 275.77 is: 380.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.13 : 651.54 = 275.77 : x
  2. Step 2: Convert to fraction form
    472.13/651.54 = 275.77/x
  3. Step 3: Cross multiply
    472.13x = 651.54 × 275.77
  4. Step 4: Simplify right side
    472.13x = 179,675.19
  5. Step 5: Solve for x
    x = 179,675.19/472.13
  6. Step 6: Final answer
    x = 380.56

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