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Finding the Fourth Proportional to 1,130.99, 1,695.88 and 400.03

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Solution

The fourth proportional to 1,130.99, 1,695.88 and 400.03 is: 599.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,130.99 : 1,695.88 = 400.03 : x
  2. Step 2: Convert to fraction form
    1,130.99/1,695.88 = 400.03/x
  3. Step 3: Cross multiply
    1,130.99x = 1,695.88 × 400.03
  4. Step 4: Simplify right side
    1,130.99x = 678,402.88
  5. Step 5: Solve for x
    x = 678,402.88/1,130.99
  6. Step 6: Final answer
    x = 599.83

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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.