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Finding the Fourth Proportional to 336.99, 503.55 and 253.05

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Solution

The fourth proportional to 336.99, 503.55 and 253.05 is: 378.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.99 : 503.55 = 253.05 : x
  2. Step 2: Convert to fraction form
    336.99/503.55 = 253.05/x
  3. Step 3: Cross multiply
    336.99x = 503.55 × 253.05
  4. Step 4: Simplify right side
    336.99x = 127,420.81
  5. Step 5: Solve for x
    x = 127,420.81/336.99
  6. Step 6: Final answer
    x = 378.12

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.