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Finding the Fourth Proportional to 502, 753.30 and 245.50

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Solution

The fourth proportional to 502, 753.30 and 245.50 is: 368.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    502 : 753.30 = 245.50 : x
  2. Step 2: Convert to fraction form
    502/753.30 = 245.50/x
  3. Step 3: Cross multiply
    502x = 753.30 × 245.50
  4. Step 4: Simplify right side
    502x = 184,935.15
  5. Step 5: Solve for x
    x = 184,935.15/502
  6. Step 6: Final answer
    x = 368.40

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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.