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Finding the Fourth Proportional to 593.79, 819.42 and 345.20

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Solution

The fourth proportional to 593.79, 819.42 and 345.20 is: 476.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    593.79 : 819.42 = 345.20 : x
  2. Step 2: Convert to fraction form
    593.79/819.42 = 345.20/x
  3. Step 3: Cross multiply
    593.79x = 819.42 × 345.20
  4. Step 4: Simplify right side
    593.79x = 282,859.69
  5. Step 5: Solve for x
    x = 282,859.69/593.79
  6. Step 6: Final answer
    x = 476.36

Related Problems

Find fourth proportional to 296.90, 409.71 and 172.60
Half scale
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Double scale
Find fourth proportional to 594.79, 820.80 and 346.20
Similar ratio
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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.