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Finding the Fourth Proportional to 368.55, 507.87 and 353.57

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Solution

The fourth proportional to 368.55, 507.87 and 353.57 is: 487.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.55 : 507.87 = 353.57 : x
  2. Step 2: Convert to fraction form
    368.55/507.87 = 353.57/x
  3. Step 3: Cross multiply
    368.55x = 507.87 × 353.57
  4. Step 4: Simplify right side
    368.55x = 179,565.06
  5. Step 5: Solve for x
    x = 179,565.06/368.55
  6. Step 6: Final answer
    x = 487.22

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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.