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Finding the Fourth Proportional to 575.49, 792.90 and 400.53

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Solution

The fourth proportional to 575.49, 792.90 and 400.53 is: 551.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    575.49 : 792.90 = 400.53 : x
  2. Step 2: Convert to fraction form
    575.49/792.90 = 400.53/x
  3. Step 3: Cross multiply
    575.49x = 792.90 × 400.53
  4. Step 4: Simplify right side
    575.49x = 317,580.24
  5. Step 5: Solve for x
    x = 317,580.24/575.49
  6. Step 6: Final answer
    x = 551.84

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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.