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Finding the Fourth Proportional to 575.04, 865.67 and 515.50

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Solution

The fourth proportional to 575.04, 865.67 and 515.50 is: 776.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    575.04 : 865.67 = 515.50 : x
  2. Step 2: Convert to fraction form
    575.04/865.67 = 515.50/x
  3. Step 3: Cross multiply
    575.04x = 865.67 × 515.50
  4. Step 4: Simplify right side
    575.04x = 446,252.89
  5. Step 5: Solve for x
    x = 446,252.89/575.04
  6. Step 6: Final answer
    x = 776.04

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.