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Finding the Fourth Proportional to 1,047.35, 1,573.47 and 988.24

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Solution

The fourth proportional to 1,047.35, 1,573.47 and 988.24 is: 1,484.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,047.35 : 1,573.47 = 988.24 : x
  2. Step 2: Convert to fraction form
    1,047.35/1,573.47 = 988.24/x
  3. Step 3: Cross multiply
    1,047.35x = 1,573.47 × 988.24
  4. Step 4: Simplify right side
    1,047.35x = 1,554,965.99
  5. Step 5: Solve for x
    x = 1,554,965.99/1,047.35
  6. Step 6: Final answer
    x = 1,484.67

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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.