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Finding the Fourth Proportional to 570.84, 856.53 and 339.54

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Solution

The fourth proportional to 570.84, 856.53 and 339.54 is: 509.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.84 : 856.53 = 339.54 : x
  2. Step 2: Convert to fraction form
    570.84/856.53 = 339.54/x
  3. Step 3: Cross multiply
    570.84x = 856.53 × 339.54
  4. Step 4: Simplify right side
    570.84x = 290,826.20
  5. Step 5: Solve for x
    x = 290,826.20/570.84
  6. Step 6: Final answer
    x = 509.47

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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.