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Finding the Fourth Proportional to 340.24, 511.59 and 313.51

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Solution

The fourth proportional to 340.24, 511.59 and 313.51 is: 471.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.24 : 511.59 = 313.51 : x
  2. Step 2: Convert to fraction form
    340.24/511.59 = 313.51/x
  3. Step 3: Cross multiply
    340.24x = 511.59 × 313.51
  4. Step 4: Simplify right side
    340.24x = 160,388.58
  5. Step 5: Solve for x
    x = 160,388.58/340.24
  6. Step 6: Final answer
    x = 471.40

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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.