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Finding the Fourth Proportional to 1,143.44, 1,712.87 and 526.30

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Solution

The fourth proportional to 1,143.44, 1,712.87 and 526.30 is: 788.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,143.44 : 1,712.87 = 526.30 : x
  2. Step 2: Convert to fraction form
    1,143.44/1,712.87 = 526.30/x
  3. Step 3: Cross multiply
    1,143.44x = 1,712.87 × 526.30
  4. Step 4: Simplify right side
    1,143.44x = 901,480.51
  5. Step 5: Solve for x
    x = 901,480.51/1,143.44
  6. Step 6: Final answer
    x = 788.39

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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.