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Finding the Fourth Proportional to 302.64, 417.30 and 228.08

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Solution

The fourth proportional to 302.64, 417.30 and 228.08 is: 314.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    302.64 : 417.30 = 228.08 : x
  2. Step 2: Convert to fraction form
    302.64/417.30 = 228.08/x
  3. Step 3: Cross multiply
    302.64x = 417.30 × 228.08
  4. Step 4: Simplify right side
    302.64x = 95,177.78
  5. Step 5: Solve for x
    x = 95,177.78/302.64
  6. Step 6: Final answer
    x = 314.49

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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.