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Finding the Fourth Proportional to 364.61, 544.06 and 320.87

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Solution

The fourth proportional to 364.61, 544.06 and 320.87 is: 478.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    364.61 : 544.06 = 320.87 : x
  2. Step 2: Convert to fraction form
    364.61/544.06 = 320.87/x
  3. Step 3: Cross multiply
    364.61x = 544.06 × 320.87
  4. Step 4: Simplify right side
    364.61x = 174,572.53
  5. Step 5: Solve for x
    x = 174,572.53/364.61
  6. Step 6: Final answer
    x = 478.79

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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.