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Finding the Fourth Proportional to 806.45, 1,113.08 and 526.19

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Solution

The fourth proportional to 806.45, 1,113.08 and 526.19 is: 726.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    806.45 : 1,113.08 = 526.19 : x
  2. Step 2: Convert to fraction form
    806.45/1,113.08 = 526.19/x
  3. Step 3: Cross multiply
    806.45x = 1,113.08 × 526.19
  4. Step 4: Simplify right side
    806.45x = 585,683.37
  5. Step 5: Solve for x
    x = 585,683.37/806.45
  6. Step 6: Final answer
    x = 726.25

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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.