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Finding the Fourth Proportional to 368.16, 507.96 and 228.21

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Solution

The fourth proportional to 368.16, 507.96 and 228.21 is: 314.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.16 : 507.96 = 228.21 : x
  2. Step 2: Convert to fraction form
    368.16/507.96 = 228.21/x
  3. Step 3: Cross multiply
    368.16x = 507.96 × 228.21
  4. Step 4: Simplify right side
    368.16x = 115,921.55
  5. Step 5: Solve for x
    x = 115,921.55/368.16
  6. Step 6: Final answer
    x = 314.87

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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.