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Finding the Fourth Proportional to 536.01, 740.10 and 388.99

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Solution

The fourth proportional to 536.01, 740.10 and 388.99 is: 537.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    536.01 : 740.10 = 388.99 : x
  2. Step 2: Convert to fraction form
    536.01/740.10 = 388.99/x
  3. Step 3: Cross multiply
    536.01x = 740.10 × 388.99
  4. Step 4: Simplify right side
    536.01x = 287,891.50
  5. Step 5: Solve for x
    x = 287,891.50/536.01
  6. Step 6: Final answer
    x = 537.10

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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.