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Finding the Fourth Proportional to 567.60, 783.35 and 346.60

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Solution

The fourth proportional to 567.60, 783.35 and 346.60 is: 478.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    567.60 : 783.35 = 346.60 : x
  2. Step 2: Convert to fraction form
    567.60/783.35 = 346.60/x
  3. Step 3: Cross multiply
    567.60x = 783.35 × 346.60
  4. Step 4: Simplify right side
    567.60x = 271,509.11
  5. Step 5: Solve for x
    x = 271,509.11/567.60
  6. Step 6: Final answer
    x = 478.35

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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.