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Finding the Fourth Proportional to 555.30, 832.64 and 339.02

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Solution

The fourth proportional to 555.30, 832.64 and 339.02 is: 508.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.30 : 832.64 = 339.02 : x
  2. Step 2: Convert to fraction form
    555.30/832.64 = 339.02/x
  3. Step 3: Cross multiply
    555.30x = 832.64 × 339.02
  4. Step 4: Simplify right side
    555.30x = 282,281.61
  5. Step 5: Solve for x
    x = 282,281.61/555.30
  6. Step 6: Final answer
    x = 508.34

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Double scale
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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.