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Finding the Fourth Proportional to 431.51, 595.28 and 265.66

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Solution

The fourth proportional to 431.51, 595.28 and 265.66 is: 366.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    431.51 : 595.28 = 265.66 : x
  2. Step 2: Convert to fraction form
    431.51/595.28 = 265.66/x
  3. Step 3: Cross multiply
    431.51x = 595.28 × 265.66
  4. Step 4: Simplify right side
    431.51x = 158,144.11
  5. Step 5: Solve for x
    x = 158,144.11/431.51
  6. Step 6: Final answer
    x = 366.49

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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.