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Finding the Fourth Proportional to 707.49, 1,061.35 and 245.14

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Solution

The fourth proportional to 707.49, 1,061.35 and 245.14 is: 367.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    707.49 : 1,061.35 = 245.14 : x
  2. Step 2: Convert to fraction form
    707.49/1,061.35 = 245.14/x
  3. Step 3: Cross multiply
    707.49x = 1,061.35 × 245.14
  4. Step 4: Simplify right side
    707.49x = 260,176.07
  5. Step 5: Solve for x
    x = 260,176.07/707.49
  6. Step 6: Final answer
    x = 367.75

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1.5x scale

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.