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Finding the Fourth Proportional to 530.95, 797.12 and 409.30

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Solution

The fourth proportional to 530.95, 797.12 and 409.30 is: 614.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.95 : 797.12 = 409.30 : x
  2. Step 2: Convert to fraction form
    530.95/797.12 = 409.30/x
  3. Step 3: Cross multiply
    530.95x = 797.12 × 409.30
  4. Step 4: Simplify right side
    530.95x = 326,259.17
  5. Step 5: Solve for x
    x = 326,259.17/530.95
  6. Step 6: Final answer
    x = 614.48

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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.