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Finding the Fourth Proportional to 515.01, 710.55 and 293.94

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Solution

The fourth proportional to 515.01, 710.55 and 293.94 is: 405.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    515.01 : 710.55 = 293.94 : x
  2. Step 2: Convert to fraction form
    515.01/710.55 = 293.94/x
  3. Step 3: Cross multiply
    515.01x = 710.55 × 293.94
  4. Step 4: Simplify right side
    515.01x = 208,859.07
  5. Step 5: Solve for x
    x = 208,859.07/515.01
  6. Step 6: Final answer
    x = 405.54

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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.