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Finding the Fourth Proportional to 566.34, 781.55 and 317.67

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Solution

The fourth proportional to 566.34, 781.55 and 317.67 is: 438.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    566.34 : 781.55 = 317.67 : x
  2. Step 2: Convert to fraction form
    566.34/781.55 = 317.67/x
  3. Step 3: Cross multiply
    566.34x = 781.55 × 317.67
  4. Step 4: Simplify right side
    566.34x = 248,276.06
  5. Step 5: Solve for x
    x = 248,276.06/566.34
  6. Step 6: Final answer
    x = 438.39

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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.