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Finding the Fourth Proportional to 1,230.58, 1,845.78 and 536.86

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Solution

The fourth proportional to 1,230.58, 1,845.78 and 536.86 is: 805.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230.58 : 1,845.78 = 536.86 : x
  2. Step 2: Convert to fraction form
    1,230.58/1,845.78 = 536.86/x
  3. Step 3: Cross multiply
    1,230.58x = 1,845.78 × 536.86
  4. Step 4: Simplify right side
    1,230.58x = 990,925.45
  5. Step 5: Solve for x
    x = 990,925.45/1,230.58
  6. Step 6: Final answer
    x = 805.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.