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Finding the Fourth Proportional to 530.79, 795.97 and 439.66

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Solution

The fourth proportional to 530.79, 795.97 and 439.66 is: 659.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.79 : 795.97 = 439.66 : x
  2. Step 2: Convert to fraction form
    530.79/795.97 = 439.66/x
  3. Step 3: Cross multiply
    530.79x = 795.97 × 439.66
  4. Step 4: Simplify right side
    530.79x = 349,956.17
  5. Step 5: Solve for x
    x = 349,956.17/530.79
  6. Step 6: Final answer
    x = 659.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.