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Finding the Fourth Proportional to 477.99, 660.25 and 368.81

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Solution

The fourth proportional to 477.99, 660.25 and 368.81 is: 509.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    477.99 : 660.25 = 368.81 : x
  2. Step 2: Convert to fraction form
    477.99/660.25 = 368.81/x
  3. Step 3: Cross multiply
    477.99x = 660.25 × 368.81
  4. Step 4: Simplify right side
    477.99x = 243,506.80
  5. Step 5: Solve for x
    x = 243,506.80/477.99
  6. Step 6: Final answer
    x = 509.44

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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.