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Finding the Fourth Proportional to 431.80, 595.58 and 417.51

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Solution

The fourth proportional to 431.80, 595.58 and 417.51 is: 575.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    431.80 : 595.58 = 417.51 : x
  2. Step 2: Convert to fraction form
    431.80/595.58 = 417.51/x
  3. Step 3: Cross multiply
    431.80x = 595.58 × 417.51
  4. Step 4: Simplify right side
    431.80x = 248,660.61
  5. Step 5: Solve for x
    x = 248,660.61/431.80
  6. Step 6: Final answer
    x = 575.87

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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.