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Finding the Fourth Proportional to 595.10, 889.21 and 429.79

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Solution

The fourth proportional to 595.10, 889.21 and 429.79 is: 642.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    595.10 : 889.21 = 429.79 : x
  2. Step 2: Convert to fraction form
    595.10/889.21 = 429.79/x
  3. Step 3: Cross multiply
    595.10x = 889.21 × 429.79
  4. Step 4: Simplify right side
    595.10x = 382,171.92
  5. Step 5: Solve for x
    x = 382,171.92/595.10
  6. Step 6: Final answer
    x = 642.19

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.