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Finding the Fourth Proportional to 988.56, 1,483.60 and 526.88

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Solution

The fourth proportional to 988.56, 1,483.60 and 526.88 is: 790.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    988.56 : 1,483.60 = 526.88 : x
  2. Step 2: Convert to fraction form
    988.56/1,483.60 = 526.88/x
  3. Step 3: Cross multiply
    988.56x = 1,483.60 × 526.88
  4. Step 4: Simplify right side
    988.56x = 781,679.17
  5. Step 5: Solve for x
    x = 781,679.17/988.56
  6. Step 6: Final answer
    x = 790.73

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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.