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Finding the Fourth Proportional to 536.58, 740.51 and 312.50

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Solution

The fourth proportional to 536.58, 740.51 and 312.50 is: 431.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    536.58 : 740.51 = 312.50 : x
  2. Step 2: Convert to fraction form
    536.58/740.51 = 312.50/x
  3. Step 3: Cross multiply
    536.58x = 740.51 × 312.50
  4. Step 4: Simplify right side
    536.58x = 231,409.66
  5. Step 5: Solve for x
    x = 231,409.66/536.58
  6. Step 6: Final answer
    x = 431.26

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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.