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Finding the Fourth Proportional to 364.95, 546.66 and 287.55

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Solution

The fourth proportional to 364.95, 546.66 and 287.55 is: 430.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    364.95 : 546.66 = 287.55 : x
  2. Step 2: Convert to fraction form
    364.95/546.66 = 287.55/x
  3. Step 3: Cross multiply
    364.95x = 546.66 × 287.55
  4. Step 4: Simplify right side
    364.95x = 157,192.08
  5. Step 5: Solve for x
    x = 157,192.08/364.95
  6. Step 6: Final answer
    x = 430.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.