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Finding the Fourth Proportional to 480.18, 663.30 and 376.58

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Solution

The fourth proportional to 480.18, 663.30 and 376.58 is: 520.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.18 : 663.30 = 376.58 : x
  2. Step 2: Convert to fraction form
    480.18/663.30 = 376.58/x
  3. Step 3: Cross multiply
    480.18x = 663.30 × 376.58
  4. Step 4: Simplify right side
    480.18x = 249,785.51
  5. Step 5: Solve for x
    x = 249,785.51/480.18
  6. Step 6: Final answer
    x = 520.19

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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.