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Finding the Fourth Proportional to 530.49, 796.07 and 287.18

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Solution

The fourth proportional to 530.49, 796.07 and 287.18 is: 430.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.49 : 796.07 = 287.18 : x
  2. Step 2: Convert to fraction form
    530.49/796.07 = 287.18/x
  3. Step 3: Cross multiply
    530.49x = 796.07 × 287.18
  4. Step 4: Simplify right side
    530.49x = 228,615.38
  5. Step 5: Solve for x
    x = 228,615.38/530.49
  6. Step 6: Final answer
    x = 430.95

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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.