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Finding the Fourth Proportional to 506.25, 697.61 and 417.45

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Solution

The fourth proportional to 506.25, 697.61 and 417.45 is: 575.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    506.25 : 697.61 = 417.45 : x
  2. Step 2: Convert to fraction form
    506.25/697.61 = 417.45/x
  3. Step 3: Cross multiply
    506.25x = 697.61 × 417.45
  4. Step 4: Simplify right side
    506.25x = 291,220.95
  5. Step 5: Solve for x
    x = 291,220.95/506.25
  6. Step 6: Final answer
    x = 575.25

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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.