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Finding the Fourth Proportional to 539.50, 744.52 and 384.52

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Solution

The fourth proportional to 539.50, 744.52 and 384.52 is: 530.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.50 : 744.52 = 384.52 : x
  2. Step 2: Convert to fraction form
    539.50/744.52 = 384.52/x
  3. Step 3: Cross multiply
    539.50x = 744.52 × 384.52
  4. Step 4: Simplify right side
    539.50x = 286,282.83
  5. Step 5: Solve for x
    x = 286,282.83/539.50
  6. Step 6: Final answer
    x = 530.64

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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.