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Finding the Fourth Proportional to 535.51, 739.02 and 314.58

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Solution

The fourth proportional to 535.51, 739.02 and 314.58 is: 434.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.51 : 739.02 = 314.58 : x
  2. Step 2: Convert to fraction form
    535.51/739.02 = 314.58/x
  3. Step 3: Cross multiply
    535.51x = 739.02 × 314.58
  4. Step 4: Simplify right side
    535.51x = 232,484.86
  5. Step 5: Solve for x
    x = 232,484.86/535.51
  6. Step 6: Final answer
    x = 434.14

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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.