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Finding the Fourth Proportional to 1,148.99, 1,585.49 and 651.65

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Solution

The fourth proportional to 1,148.99, 1,585.49 and 651.65 is: 899.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,148.99 : 1,585.49 = 651.65 : x
  2. Step 2: Convert to fraction form
    1,148.99/1,585.49 = 651.65/x
  3. Step 3: Cross multiply
    1,148.99x = 1,585.49 × 651.65
  4. Step 4: Simplify right side
    1,148.99x = 1,033,173.37
  5. Step 5: Solve for x
    x = 1,033,173.37/1,148.99
  6. Step 6: Final answer
    x = 899.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.