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Finding the Fourth Proportional to 423.19, 583.84 and 275.77

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Solution

The fourth proportional to 423.19, 583.84 and 275.77 is: 380.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    423.19 : 583.84 = 275.77 : x
  2. Step 2: Convert to fraction form
    423.19/583.84 = 275.77/x
  3. Step 3: Cross multiply
    423.19x = 583.84 × 275.77
  4. Step 4: Simplify right side
    423.19x = 161,006.63
  5. Step 5: Solve for x
    x = 161,006.63/423.19
  6. Step 6: Final answer
    x = 380.46

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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.