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Finding the Fourth Proportional to 620.02, 930.30 and 346.51

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Solution

The fourth proportional to 620.02, 930.30 and 346.51 is: 519.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.02 : 930.30 = 346.51 : x
  2. Step 2: Convert to fraction form
    620.02/930.30 = 346.51/x
  3. Step 3: Cross multiply
    620.02x = 930.30 × 346.51
  4. Step 4: Simplify right side
    620.02x = 322,358.25
  5. Step 5: Solve for x
    x = 322,358.25/620.02
  6. Step 6: Final answer
    x = 519.92

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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.