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Finding the Fourth Proportional to 514.90, 710.40 and 293.84

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Solution

The fourth proportional to 514.90, 710.40 and 293.84 is: 405.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    514.90 : 710.40 = 293.84 : x
  2. Step 2: Convert to fraction form
    514.90/710.40 = 293.84/x
  3. Step 3: Cross multiply
    514.90x = 710.40 × 293.84
  4. Step 4: Simplify right side
    514.90x = 208,743.94
  5. Step 5: Solve for x
    x = 208,743.94/514.90
  6. Step 6: Final answer
    x = 405.41

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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.