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Finding the Fourth Proportional to 1,130.57, 1,695.92 and 351.11

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Solution

The fourth proportional to 1,130.57, 1,695.92 and 351.11 is: 526.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,130.57 : 1,695.92 = 351.11 : x
  2. Step 2: Convert to fraction form
    1,130.57/1,695.92 = 351.11/x
  3. Step 3: Cross multiply
    1,130.57x = 1,695.92 × 351.11
  4. Step 4: Simplify right side
    1,130.57x = 595,444.24
  5. Step 5: Solve for x
    x = 595,444.24/1,130.57
  6. Step 6: Final answer
    x = 526.67

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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.