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Finding the Fourth Proportional to 571.14, 858.31 and 340.07

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Solution

The fourth proportional to 571.14, 858.31 and 340.07 is: 511.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.14 : 858.31 = 340.07 : x
  2. Step 2: Convert to fraction form
    571.14/858.31 = 340.07/x
  3. Step 3: Cross multiply
    571.14x = 858.31 × 340.07
  4. Step 4: Simplify right side
    571.14x = 291,880.34
  5. Step 5: Solve for x
    x = 291,880.34/571.14
  6. Step 6: Final answer
    x = 511.05

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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.